Be careful just a few months back Amex was giving 2000 + 4000 points to the new member.
So EARLIER the old member was getting 8000 referral points and the new member was getting 6000 points, after spending 15000 or 10000 in 90 days.
Now they have taken away the 4000 points from the new member and giving it as extra 4000 referral bonus points to the referring old member.
So NOW the old member will get 12000 referral points and the new member will get only 2000 points, after spending 15000 or 10000 in 90 days
This is one of the main reasons why it's becoming increasingly difficult to sell Amex cards to new members, using the member get member scheme.
The returns for new members have dropped significantly with 4000 less points.